Rope-grip or jockey for mechanical haulage and the like.



G. T. CANNON. ROPE GRIPOR JocKBY PoR MBGHANIGAL HAULAGE AND THB LIKE.APPLICATION FILED DEO. 26, 1913. 1,092,137"y Patented Apr. '7, 1914.

2 SHEETS-SHEET 1.

l l i il CDLUMEIA PIANDURAPH Co.. WASHINGTUN. D. c.

G.T.CANN0N. ROPE GRIP 0R JOGKEY FOR MECHANICAL HAULAGE AND THE LIKE.APPLICATION FILED 1350.26, 1913.

2 SHEETS-'SHEET 2.

6N E Mi i5 COLUMBIA FLANOGRAPH co..w^sH|N01oN, D. C.

NIE 1- earns PAT GEORGE TOM CANNON, 0F JOHANNESBURG', TRANSVAAL, SOUTHAFRICA.

Application iled December 26, 1913.

To all whom t may concern Be it known that I, GEORGE TOM CANNON, M. R.C. V. S., a subject of the King of Great Britain, and resident ofJohannesburg, Province of rlransvaal, Union of South Africa, haveinvented certain new and useful Improvements -in Rope-Grips or Jockeysfor Mechanical Haulage and the like, of which the following is aspecification.

This invention relates to a jockey or ropegrip for use in mechanicalhaulages for .detachably connecting a truck or like vehicle to thehaulage rope, of the kind comprising a rotatable grooved gripping memberand a rigid gripping member between which the haulage rope is gripped.

lIhe object of the present improvements 1s to render a jockey or grip ofthe kind referred to more reliable in operation, and to that end theinvention consists in either so constructing one or both of the grippingparts that the release or disengagement of the haulage rope by saidmembers-when 'said haulage rope is upwardly inclined for that purposevisfacilitated, and the possibility of derailment of the truck or othervehicle thereby reduced to a minimum; or in the provision of means forpreventing the drag or frictional Contact of the hauling rope with thelower portion of the rotatable gripping member from preventing therelease of the rope by impeding the rotation of said member when therope is inclined in an upward direction to cause said rope to bereleased and to maintain the rope at such an angle or inclination to thehorizontal, where it passes between the rotatable and rigid grippingmembers of the jockey, that accidental rengagement of the rope andjockey is avoided; or in a combination of both of the above features.

The inventionconsists either in constructing one, (preferably therotatable grooved gripping member) of the parts between which the ropeis gripped in such a way that the rope, when upwardly inclined, can liftsaid member or move it outwardly away from the other gripping member,and so permit the free disengagement of the rope from between thegripping members; or (whether one of the gripping parts be or be notadapted to lift or move outwardly) in providing the jockey or grip witha projection, part or member at the back (relative to the direction oftravel), or, in the Specification of Letters Patent.

Patented Apr. 49net.,

serial No. 808,896.

case of a reversible jockey or one designed to work both ways, at boththe front and back; said projection, part or member being positioned inline with the opening which is formed between the rotatable groovedgripping member and the rigid gripping member in which opening the ropeis gripped.

The invention will be more fully dedescribed with the aid of theaccompanying drawings wherein- Figure l is a side elevation of one formof the jockey or rope-grip embodying both features of the invent-ion,Fig. 2 being an elevation at right angles to Fig. 1 and Fig. 3 a plan.Fig. 4 is a side elevation of an alternative construction of the jockeyillustrating a modification of the first feature of the invention. Fig.5 is a view at right angles to Fig. 4 and Fig. 6 a plan.

Referring more particularly to the construction illustrated in Figs. lto 3, 1 represents the stem, spindle or other suitably shaped piecewhich is rotatably or otherwise attached, in any ordinary or convenientmanner, to the truck or vehicle. The stem, spindle or piece l issuitably constructed to form at or in proximity to its upper end thecross-piece or base portion 2 on which is provided in thc requisiterelative positions the rigid gripping member 3 and the rotatable groovedgripping member 4. The pin or projection 3 which forms the rigidgripping member or a part thereof may be constructed at the bottom abovethe base 2 with a boss or enlarged portion 5. Around the pin 3 abovesaid boss or enlarged portion 5 is arranged a preferably rotatablesleeve -instead of a rotatable sleeve 6 a non-rotatable piece may beprovided on the pin 3 and either completely encircle the pin or cover itonly on the inside or opposite the rotatable gripping member 4, or thepin 3 may be used alone and be directly engaged by the rope. The pin 8above the sleeve 6 or its equivalent is preferably reduced to receive acap 7 which may as shown be pinned thereon, or screwed or otherwisefixed thereto. The cap or its equivalent 7 serves to retain the sleeve 6in position on the pin 3. This portion-that is to say, those partsforming the rigid member of the jockey-is preferably reduced in lengthas compared with the known constructions. The other pin or projection 8,on which the rotatable gripping member 4 is arranged, exceeds the pin 3of the nonrotatable member in length. The rotatable gripping member 4 isconstructed in the known manner with oppositely inclined helical grooves4a, 4b and it is mounted on its pin 8 in such a way that the rope isgripped between it and the rotatable sleeve 6 of the rigid grippingmember. Y,

Encircling the pin 8 above the rotatable gripping roller or member 4there is preferably arranged a helical or other suitable spring 9, andon the preferably reduced upper end of the pin 8 above said spring 9 acap or its equivalent 10 is pinned (as shown), screwed or otherwisefixed to the end of said pin.

A ball or other suitable bearing may be interposed between the cap 10 orits equivalent and a washer with which the upper end of the spring 9will engage or a similar bearing may be interposed between a washer andthe top of the gripping roller 4 or between the cap 10 and roller 4 andwashers at both ends of the spring. Vith this construction the rotatablegripping member 4 can be moved against the spring 9 by the action of thehaulage rope when it is upwardly inclined. This upward movement of therotatable gripping member 4 will allow the rope to pass freely out ofthe helical groove and from between the gripping roller 4 and the sleeve6 of the rigid gripping member.

As the weight of the rope tends to keep the rotatable gripping member 4in its lowermost position on the pin 8, it may be found possible todispense with the spring 9, butl in this event the pin 9 must be of asufficient length to permit the gripping member 4 to be lifted by thehaulage rope when the latter is upwardly inclined.

ln connection with Figs. 1, 2 and 3 I also illustrate that feature whichconsists in providing the jockey or grip with a projection, part ormember at the back, or both front and back when the jockey or grip isreversible. 11 denotes the said projection, part or member which isshown provided at both the back and front of the jockey. The member 11is shown arranged upon the stem or spindle 1, the latter being of squareshape in cross-section and the hole inthe member 11 of correspondingshape which insures said member being kept in its correct positionrelative to the rotatable and rigid gripping members. The arms of themember 11 project upwardly and outwardly as shown in Figs. 2 and 3 andthey are of such a length that their upper ends (which are preferablycurved outwardly and downwardly to prevent damage to the rope), areapproximately on a level with the beveled or inclined lower portion 12of the rotatable gripping member 4. That arm of the member 11, which isat the back relative to the direction of travel of the jockey, preventsthe haulage rope dragging upon or having frictional contact with thelower portion 12 of the revoluble gripping member to such an extent thatwhen the said rope is upwardly inclined, it causes' the release of therope from the jockey. When the rope is so inclined it comes into contactwith the helically grooved portion 13 of the rotatable gripping member 4which is free to revolve to allow of the disengagement of the rope, themember 11l at the back of the jockey serving as a rest for the rope andpreventing the inclined rope from rotating the member 4 beyond the pointof release of the rope. rlDhe member 11 may be fixed to any othersuitable part or parts of the jockey, or it may be constructed integraltherewith. `It may be constructed of any other suitable shape as forexample in the form of a right angle piece.

to the pan or truck body in any suitable manner so long as its upper endassumesthe position previously described relative to the rotatablegripping members of the jockey.A

The member may be constructed in one piece with the bracket or otherpart of the truck or vehicle or be a separate part and fixed thereto inany convenient manner.

The preferred form of the device is that shown in Figs. 1 to 3, eitherwith or without the spring 9; that is to say it is preferred to make therotatable gripping member 4 soV that it can be lifted upon its pin 8 bythe inclined hauling rope an'dalso to employ in combination with it themember 11.

In the modified form of the invention illustrated in Figs. 4 to 6, thepin 8 upon which the gripping roller 4 is rotatably mounted may beconstructed in one piece with or be suitably attached to a p art 14which is hinged along its outer edge or side to the base 2; 15 being thehinge pin. The part 14 which carries the gripping roller pin or` spindle8 may be shaped to fit a recess 16 in the top of the base portion 2. 17is a curved projection formed upon the bottom of part 14 whichprojection 17 passes through a hole 18 formed in the base portion 2. 19is a pin which is fixed in the end of the projection 17 beneath thebottom of the base porportion 2. The pin 19 on projection 17 by engagingthe bottom of the base portion 2' Y Y8E i The arm or arms of the member11, as seen iso prevents the pin 8 and the griping roller 4 from beingmoved about the hinge pin 15 beyond a predetermined amount, which issufficient to permit of the disengagement of the haulage rope from thejockey. If desired the hinged base portion 14 of the construction shownin Figs. 4 to 6 may be combined with a suitable spring arrangement forkeeping the parts in their normal position and for resistingunintentional movement of the hinged parts.

What I claim as my invention and desire to protect by Letters Patent isl. A jockey or rope-grip comprising a rotatable gripping member and arigid gripping member, the rotatable gripping member being adapted to belifted by the haulage rope to permit the latter to pass from between thegripping members as set forth.

2. A jockey or rope-grip comprising a rotatable gripping member, a rigidgripping member and a sleeve rotatably mounted upon said gripping memberopposite the rotatable gripping member, the rotatable gripping memberbeing adapted t0 be lifted by the haulage rope to permit the lat-ter topass from between the gripping members as set forth.

A jockey or rope-grip comprising a rotatable gripping member, a rigidgripping member and a spring arranged above the rotatable grippingmember, said rotatable gripping member being adapted to be liftedagainst the Spring by the haulage rope to permit the latter to pass frombetween the gripping members as set forth.

4. A jockey or rope grip comprising a base portion, a pin or projectionon said base portion a gripping roller rotatably mounted upon said pinor projection, said pin or projection being of such a length as to allowthe gripping roller to be lifted by the inclined haulage rope to asuflicient extent to permit the rope to disengage the grip or jockey anda rigid gripping member between which and the rotatable gripping memberthe rope is gripped.

5. A jockey or rope-grip comprising a base portion, a pin or projectionon said base portion a gripping roller rotatably mounted upon said pinor projection, a spring arranged on said pin or projection above thegripping roller, means for retaining said spring in position, said pinor projection being of such a length as to allow the gripping roller tobe lifted by the inclined haulage rope to a sufficient extent to permitthe rope to disengage the grip or jockey and a rigid gripping memberbetween which and the rotatable gripping member, the rope is gripped.

6. A jockey or rope-grip comprising a pair of gripping members one ofwhich is grooved and adapted to be rotated into a disengaging positionby the contact with it of the hauling rope when said rope is upwardlyinclined, and a member arranged at the back of said gripping members andin line with the opening which is provided between said gripping for therope, said members serving as a rest for the rope at the back of thegripping members when said rope is upwardly inclined thereby preventingthe rotatable gripping member from being rotated beyond the point ofrelease or to a suflicient extent to cause the rope to be rengaged bythe jockey or rope grip.

7 A jockey or rope-grip comprising a pair of gripping members one ofwhich is adapted to be lifted by the hauling rope to permit said rope topass from between the gripping members and a member arranged at the backof said gripping members and in line with the opening which is providedbetween said gripping members for the rope, said member serving as arest for the rope at the back of the gripping members when said rope isupwardly inclined, thereby preventing the rotatable gripping member frombeing rotated beyond the point of release or to a sufficient extent tocause the rope to be rengaged by the jockey or rope grip.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE TOM CANNON.

Witnesses OHAs OvENDALn, A. THOMPSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner ot Patents, Washington, D. G.

